Shortcut to find percentage of a number within seconds
Let us understand a simple concept on percentages here
100% of a number will be the number itself
ex:100% of 360 will be 360
50% of a number will be half of the number
ex:50% of 360 will be 360/2=180
25% of a number will be quarter of the number or half of 50% of the number
ex:25% of 360 will be 360/4 or 180/2=90
10% of a number can be found by shifting the decimal point by 1 place to the left.
ex:10% of 360 will be 36.0
Now that we know the concept let us see how we can apply this trick in the below examples
Example 1: 11% of 550
Step 1:Split the number into 2 numbers that we can easily find the percentage of.
We can split 11% into 10% and 1%
Step 2:First we find 10% of 550 by shifting the decimal point to the left by 1 place.
We get,
10% of 550=55.0
Step 3:Now we need to find 1% of 550 by shifting the decimal point to the left by 2 places.
We get,
1% of 550=5.50